A 100.0-mL aliquot of 0.100 M diprotic acid H2A (pK1 = 4.00, pK2 = 8.00) was titrated with 1.00 M NaOH. What is the value of α2 at the second equivalence point? 99.6×10−2 3.45×10−3 2.87×10−4 3.46×10−11 1.20×10−9

A 100.0-mL aliquot of 0.100 M diprotic acid H2A (pK1 = 4.00, pK2 = 8.00) was titrated with 1.00 M NaOH. What is the value of α2 at the second equivalence point? 99.6×10−2 3.45×10−3 2.87×10−4 3.46×10−11 1.20×10−9

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter15: Acid-base Equilibria

Section: Chapter Questions

Problem 125CP: Cacodylic acid, (CH3)2AsO2H, is a toxic compound that is a weak acid with pKa = 6.19. It is used to...

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Concept explainers

Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.

Question

A 100.0-mL aliquot of 0.100 M diprotic acid H₂A (pK₁ = 4.00, pK₂ = 8.00) was titrated with 1.00 M NaOH. What is the value of α₂ at the second equivalence point?

99.6×10−2

3.45×10−3

2.87×10−4

3.46×10−11

1.20×10−9

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